These observations are part of a study on short orbital period recurrent novae as Supernovae Type Ia progenitors.

It is essential to know 24 hours prior to the HST COS observations that IM Nor is not in outburst, in order to protect the instrumentation. Also, photometry is needed throughout the HST window to insure knowledge of the brightness of the system.

Observers are asked to monitor IM Nor with nightly snapshot images (V preferred) from now through February 20, and to report their observations promptly. It will be especially important to know the brightness of IM Nor each night through February 17 UT.

The AAVSO comparison star sequence for IM Nor has been extended so that IM Nor itself, which is V ~ 18.5 at minimum, can be imaged without saturating the faintest comparison stars. Stacking may be necessary to visualize IM Nor. Visual observations, if feasible, are welcome.

In its original outburst, IM Nor (Nova Nor 1920) reached V ~ 8.5, as it did in 2002, the year of its only recurrent outburst observed to date.